Finding distances to astronomical objects lets us make maps of the Universe. We can't use one method to cover all distances, so we have to apply the correct method at the right scale.
What is the correct order of distance techniques, ordered from those that are useful for close objects to those useful for the farthest objects?
a. Hubble's Law -> parallax -> variable stars
b. parallax -> Hubble's Law -> variable stars
c. variable stars -> Hubble's Law -> parallax
d. parallax -> variable stars -> Hubble's Law